Sash-lock



UNI AIRS JOSEPH MARSH, OF ROCHESTER, NEW' YORK.

SASH-LOCK.

To all whom t may concern.'

Be it known that I, JOSEPH MARSH, of Rochester in the State of New York, have invented certain new and useful Improvements in Sash-Locks, of which the following is a full and exact description, reference being had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon, same letters signifying like parts in all the drawings, and of said drawings- Figure 1 is a perspective view. Fig. 2 is a plan with the cover c c removed. Fig. 3 is a view of the edge through which the bolt projects.

The nature of my invention consists in so constructing a sash-lock composed of a weighted lever and a sliding` bolt that it may be very easily and neatly applied to the sash of either house or rail-road car windows and when the bolt is in its place and the weight of the sash resting thereon the bolt cannot be withdrawn.

To enable others skilled in the art to make and use my invention I will proceed to de scribe it in detail as follows: I inclose a weighted lever A and a sliding bolt B, between two plates D and C, said plates being bent at the sides and ends as shown in the drawings. The bolt and lever are of the form there shown and the plate C has a circular opening' through which the handle or knob A for moving the lever projects; and

it has also another opening at B (Figs. 1 and 8) to allow of the passage of the bolt.

The bolt and lever are connected in a wellknown manner as exhibited but in addition to the usual projection and notches in the bolt for the purpose of confining and regulating its action I make a secondary notch or gap at cl. It will then be evident that when the bolt is ejected to the proper distance and the weight of the sash bears on the edge e (Fig. Q.) of said bolt the bent edge of the plate 0 (which is the only part of c shown in Fig. 37 will prevent the withdrawal of the bolt until the Weight is removed. But on gently raising the sash the bolt drops down toward e and frees the notch d, allowing the bolt to be operated by the lever and handle A.

The advantage ot this arrangement for railroad cars is very obvious, as it entirely removes the necessity of springs.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent is- The construction and arrangement of the plates C and D, the lever A, and bolt B, said oolt having the secondary locking notch at cl operating in the manner and for the purpose substantially as described.

JOSEPH MARSH. [Ls] Signed and sealed in the presence of- H. SARGANT, JAMES C. CAMPBELL. 

